70 
PLAXIPHORA MATTHEWSI, Iredale. 
- (Proc. Mal. Soc. Lon., vol. ix., June, 1910, pp. 96-100.) 
Frembleya matthewsi, Iredale (Dis. List. Austr. Polypla- 
cophora, Ashby: Proc. Roy. Soc. S. Austr., vol. xlii., 1918, p. 85). 
> . I notice this season that each of the three small specimens 
of the above shell that have fallen to my lot during this 
f 
a large number of slender processes, which for want o 
pointed. The surface is highly polished and white, in some 
lights, showing a few transverse lines; the stalk, bristle, or 
Girdle spicules.—The species under discussion has three 
forms of spicules—if these oar-headed processes can be term 
spicules at all. There are the long, coarse, dark brown spicules 
or bristles that take their rise in bunches at each suture; these 
are taper-pointed, like a needle. Then there are a great many 
short, transparent, rather blunt-pointed spicules that form 
the fringe of the girdle. Lastly, there are these organs that 
ve 
_Comparisons.—While all the specimens I have collected . 
exhibit oar-headed spicules, I have two, given me by Mr. W. : 
May, of Tasmania, from Port Arthur in that State, tha 
